Multiple choice

If the sum of present ages of Anu, Binni and Chandra is 50 years. Before 5 years the ratio of their ages was 1: 2 : 4. Present age of B is –

  1. 10 years

  2. 15 years

  3. 16 years

  4. 20 years

  5. 24 years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let ages 5 years ago be x, 2x, 4x (ratio 1:2:4). Then x+2x+4x = 7x = 50-15 = 35 (current sum minus 15 years total). So x = 5. Ages 5 years ago: 5, 10, 20. Current ages: 10, 15, 25. Binni's current age is 15 years.

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